Steam-boiler



(No Model.)

L. SOHUTTE. Steam Boiler. No. 241,826. Patented 24,1881.

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UNITED STATES PATENT OFFICE.

LOUIS SGHUTTE, OF PHILADELPHIA, PENNSYLVANIA.

STEAM-BOILER.

SPECIFICATION forming part of Letters Patent No. 241,826, dated May 24, 1881.

(No model.)

To all whom it may concern Be itknown that I, LoUIs SoHU'r'rE, of Phila delphia, in the county of Philadelphia and State of Pennsylvania, have invented certain improvements in Steam-Boilers, of which the following is a specification.

My invention relates to that class of tubular steam-boilers in which the wateris contained within the tubes and caused to circulate by reason of the difference in temperature in different parts of the apparatus; and the improvements consist in providing the tubes with a cap or fitting at each end, and connecting the caps or fittings of the tubes forming a section by means of short tubes of smaller diameter having right and left threads on their opposite ends; in forming or providing the head or heads of the drum with a separate or independent steam-chamber, to which steam is admitted by one or more perforated tubes extending longitudinally within the drum and taking steam throughout its length and in other details hereinafter explained.

In the accompanying drawings, Figure 1 represents a face View of my improved boiler or generator set up for use, one-half the front being removed in the drawings to show the internal structure, and a portion being shown in section for the same purpose. Fig. 2 represents a vertical section, from front to rear, on the line no as of Fig. 1 Fig. 3, an enlarged View, showing the manner of connecting the tube caps or fittings.

The objects of the invention are to reduce the weights of the various parts to the minimum; to give elasticity to the structure,in order that it may accommodate itself to unequal expansion of different portions; to permit the ready removal of a tube or section; and to secure an even evaporation in all parts of the drum or drums.

Referring, now, to the drawings,A represents the generator, which, as there shown, consists of a number of inclined tubes,B, furnished at their ends with caps or fittings G, screwed thereon, the tubes being arranged in vertical series, with the caps or fittings of each end of a series connected by short tubes,D, of reduced diameter, threaded in reverse directions at their opposite ends, as shown in Fig. 3. The

lowermost connecting-tube I) at the rear end of the section or series connects with a muddrum, E, while the uppermost connecting-tube at the forward end communicates with the interior of a drum-head, F, connected with a second drum-head, G, by means of a drum or body, H, the rear drum-head, in turn, being connected with the mud-drum by a pipe, I, or by a pair or series of such down-pipes.

It will be seen by reference to Figs. 1 and 2 that the upper series or row of connectingtubes D are flanged at their upper ends and connected with the drum-heads by means of collars or couplings L. Under ordinary constructions great ditficulty is experienced in preserving a tight joint in these couplings, as also between the fines or pipes and their vertical connections; but by the use of the short connecting-tubes sufficient elasticity is secured in the structure to compensate for unequal expansion in different parts, and in this way tight joints are maintained.

As stated, and as shown in Fig. 1, the connecting-tubes or thimbles D are of smaller diameter than caps or fittings, and consequently, although the said caps or fittings are but a short distance apart, a considerably larger space is left between the tubes or thimbles D.

It will also be observed by reference to Fig. 1 that the tubes B of one section are arranged opposite or in line with the spaces between the tubes of adjoining series, so that the caps or fittings (J of each section stand between the tubes or thimbles D of adjoining sections, thus permitting the tubes to be arranged very compactly, and also permitting any tube or section to be uncoupled and withdrawn, the caps or fittings of such tube or section passing out between the thimbles or connecting-tubes D, and

the thimbles or connecting-tubes of the section removed passing between the caps or fittings of the adjoining sections.

In the drawings I have represented two drums, H, the heads F and G being shown of double construction, to receive both drumbodies H. It is, however, apparent that a single drum may be used, or several, as may be found necessary or expedient. In either or both drum-heads I form a separate chamber, J, to which steam is supplied by one or more I do not claim.

perforated pipes, K, extending longitudinally within the drum, as shown in Fig. 2, the chamber J communicating with each drum, as indicated in Fig. 1. If both drum-heads be provided with a chamber, J, the tubes or pipes K are not required to extend farther than half the length of the drums; but if one head only be thus provided the pipe should extend the entire length of the drum, the object being to take steam from all parts of the drum alike, and thereby to cause an even evaporation throughout the length of the same. Steam is taken from the chamber or chambers J for use.

Under theabove construction I am enabled to furnish at a comparative small cost a generator light and durable, and the joints of which may be kept tight without difficulty, and which possesses the further advantage of permitting the removal of any tube or section without disturbing any other tube or section.

The water is fed into the muddrum, passes up through the vertical tine at the rear end of the tubes B, through the latter, and up the vertical flue at their forward end, into the drum H, and finally through the down pipes or pipe I to the mud-drum, thus circulating completely through the apparatus.

The fire-chamber, grate, ash-pit, and other parts not particularly described may be of any ordinary and suitable construction, and the usual gages and attachments will be employed.

I am aware that cast-iron heads for manifolds, each adapted to receive a number of boiler-fines, have been connected with each other by short tubular connections, and these My construction, wherein each tube is provided with its individual cap, has the advantage of offering a greater beatingsurface, and to permit each cap and flue to be adjusted, tightened, or removed without disturbing the others, and without removing the boiler from its place. The manifolds, each having a series of pipes connected therewith, require an entire section of the boiler to be re moved in order to permit the disconnection of a single tube.

Having thus described my invention, what I claim is 1. In a steam-boiler, the combination of a series of tubular sections, each section consisting of a series of water-tubes, united by means of individual caps and vertical connecting-pipes screwed into said caps, the tubes of one section being arranged opposite the spaces between the tubes of the adjacent sections, substantially as shown, whereby the removal of any cap or tube in the boiler is permitted without disturbing the others.

2. The combination of the tubes B, caps G, pipes I), steam-drum H, connection L, and pipe I, as shown.

3. In a steam-boiler, a tube-section, the same consisting of a si-ries of substantially horizontal tubes, :1. series of caps screwed one directly upon the end of each tube, and small vertical pipes or thimbles provided with right and left threads on their opposite ends, and screwed in an upright position directly into the sides of the tube-caps.

4. The herein-described steam-boiler A, consisting of the steam-drum G, pipes B, vertical connections 0 I), drum H, and down-pipe I.

LOUIS SOHUTTE.

\Vitnesses:

BENTON 0. SEVERN, J. W. HENCILL. 

